anisometropia
Sign in to saveAnisometropia is a condition in which a person's eyes have substantially differing refractive power. Generally, a difference in power of one diopter (1D) is the threshold for diagnosis of the condition. Patients may have up to 3 diopters of anisometropia before the condition becomes clinically significant due to headache, eye strain, double vision or photophobia.
Key facts
- Medical condition (new).name
- Antimetropia
- Medical condition (new).symptoms
- One eye has myopia and other has hyperopia
- Medical condition (new).complications
- Amblyopia
via Wikipedia infobox
Research
2,556 papers- Aniseikonia and anisometropia: implications for suppression and amblyopia.Clinical & experimental optometry · 2019
- The tolerance of anisometropia.Acta ophthalmologica · 2020
- The relationship between anisometropia and amblyopia.Progress in retinal and eye research · 2013
- Observations on the relationship between anisometropia, amblyopia and strabismus.Vision research · 2017
- Anisometropia and its association with refraction development in highly myopic children.Clinical & experimental optometry · 2024
via PubMed
~9 min read
Encyclopedic overview
11 sectionsContents
- Presentation
- Causes
- Diagnosis
- Treatment
- Spectacle correction
- Example
- Contact lenses
- Refractive surgery
- Epidemiology
- References
- External links
Anisometropia is a condition in which a person's eyes have substantially differing refractive power. Generally, a difference in power of one diopter (1D) is the threshold for diagnosis of the condition. Patients may have up to 3 diopters of anisometropia before the condition becomes clinically significant due to headache, eye strain, double vision or photophobia.
In certain types of anisometropia, the visual cortex of the brain cannot process images from both eyes simultaneously (binocular summation), but will instead suppress the central vision of one of the eyes. If this occurs too often during the first 10 years of life, while the visual cortex is developing, it can result in amblyopia, a condition where, even when correcting the refractive error properly, the person's vision in the affected eye may still not be fully correctable to 20/20.
Excerpted from Wikipedia’s “anisometropia” article, available under the CC BY-SA 4.0 licence.